| 61. | A terminal multiplexer has six 1200 bps' terminals and 'n' 300 bps terminals connected to it. If the outgoing line is 9600 bps, what is the value of n ? |
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Answer: (b).8
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| 62. | Which of the following is used in the options field of IPv4 ? |
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Answer: (c).time stamp
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| 63. | Which layers of the OSI reference model are host-to-host layers ? |
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Answer: (a).Transport, Session, Presentation, Application
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| 64. | A network on the Internet has a subnet mask of 255.255.240.0. What is the maximum number of hosts it can handle ? |
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Answer: (c).4096
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| 65. | Four bits are used for packed sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size ? |
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Answer: (c).15
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| 66. | A Multiplexer combines four 100-Kbps channels using a time slot of 2 bits. What is the bit rate ? |
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Answer: (c).400 Kbps
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| 67. | In a fully connected mesh network with 10 computers, total ______ number of cables are required and ____ number of ports are required for each device. |
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Answer: (c).45,9
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| 68. | In TCP/IP reference model, the job of ____ layer is to permit hosts to inject packets into any network and travel them independently to the destination. |
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Answer: (d).None of the above
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| 69. | If there are N people in the world and are using secret key encryption/decryption for privacy purpose, then number of secret keys required will be: |
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Answer: (c).N*(N-1)/2
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| 70. | Optical fiber uses reflection to guide light through a channel, in which angle of incedence is _______ the critical angle. |
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Answer: (c).greater than
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